Things threatened to get ugly this week between two of the tennis greats of the modern generation. No, not Federer and Nadal (although playing in the same match) but but the wily old souls of Agassi and Sampras. In a charity event for Haiti no less!It just shows that the great rivalries live on forever.. In my opinion, Agassi is the one to lower the tone though! WR3PWFCWHXTY